| 川西甲基卡伟晶岩型锂矿矿床地质特征及成矿机制研究 |
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| 引用本文： | 纪德宝,栗豫丰,向云燕,杜金锐. 川西甲基卡伟晶岩型锂矿矿床地质特征及成矿机制研究[J]. 四川有色金属, 2021, 0(1): 14-17 |
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| 作者姓名： | 纪德宝 栗豫丰 向云燕 杜金锐 |
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| 作者单位： | 四川省地质矿产勘查开发局地质矿产科学研究所,四川成都 610000;核工业二八0研究所,四川广汉618300;成都理工大学,四川成都 610059;四川省矿产资源储量评审中心,四川成都 610045 |
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| 摘 要： | 甲基卡花岗伟晶岩型锂矿床位于松潘-甘孜造山带东缘,在国际国内稀有金属需求大背景下,具有非常重要的战略意义.岩体和矿脉主要侵位于三叠系复理石沉积变质砂岩中,产生一系列的热液接触变质作用,根据矿床地质特征和矿脉产出特征等研究得出,印支造山晚期(稳定期),垂直地壳流动引发底辟作用造成岩浆上涌挤出,导致区域增温引起三叠系复理石...
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| 关 键 词： | 甲基卡锂矿床 花岗伟晶岩脉 变质穹隆 成矿机制 |
Geological Characteristics and Metallogenic Mechanism Analysis of the Jiajika-type Lithium Deposit,Western Sichuan |
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| JI Debao,SU Yufeng,XIANG Yunyan,DU Jinrui. Geological Characteristics and Metallogenic Mechanism Analysis of the Jiajika-type Lithium Deposit,Western Sichuan[J]. Sichuan Nonferrous Metals, 2021, 0(1): 14-17 |
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| Authors: | JI Debao SU Yufeng XIANG Yunyan DU Jinrui |
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| Affiliation: | (Institute of Geology and Mineral Resource,Sichuan Bureau of Geology and Mineral Resources,Chengdu 610000,China;No.280 Institute of Nuclear Industry,Guanghan 618300,China;Institute of Earth Sciences,Chengdu University of Technology,Chengdu 610059,China;Mineral Resources Reserves Assessment Center of Sichuan Province,Chengdu 610045,China) |
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| Abstract: | The Jiajika granite pegmatite-type lithium deposit is located on the eastern edge of the Songpan-Ganze orogenic belt,and its proven reserves are among the highest in the world.The rock and veins are mainly invaded in the Triassic flysch sedimentary metamorphic sandstone,resulting in a series of hydrothermal contact metamorphisms.In the late Indo-Chinese orogenic period(stable period),according to the geological characteristics of ore deposits and the vein,it is concluded that vertical crustal flow triggered vertical diapir,which caused magma upwelling and extruding.leading to regional warming.Triassic flysch deposits melt locally,forming S-type granite magma rich in Li and F.Magma intrusion and decompression occur liquid immiscible separation of volatile and poor silicate melts and lean volatile and silicate rich melts.At the same time,it is accompanied by the mineralization of rare metal elements.Lenticular-like layered Li-rich pegmatite veins are formed in the layer. |
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| Keywords: | The Jiajika lithium deposit Granite-pegmatite vein metamorphic dome The ore-forming mechanism |
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